240Z Turbo Posted May 21, 2001 Share Posted May 21, 2001 Psst, Psst...come here you sexy little thing! That was me hiding in your intercooler! Without actually hearing it, it is hard to say. The only normal sound you would hear is compressor surge because you don't have the blow-off valve. The charge backing up on your turbo usually sounds like a Curly(3 stoogies), whoo whoo whoo whoo. Even if you are not making + manifold pressure you are still pressuring from the turbo @ -3 in-mg. Make sure you do not have any leaks and be familiar with what compressor surge sounds like. give it some throttle in 3rd gear and let off and listen to the surge. Hey Donna, Psst Psst! Quote Link to comment Share on other sites More sharing options...
D83ZXT Posted May 21, 2001 Author Share Posted May 21, 2001 Hi Z'rs I have a question for you. This one has me stumped. I have an 83zxt 2,700 miles w/IC set at 8lbs of boost. As of this moment there is no blow off value. My car has started to make a Psst Psst sound when I shift or push in the clutch while at the higher RPMs. Last night I removed the pop off and closed it off. It still makes that noise while shifting at -3 vaccum to + boost. Can any one of you tell me what's up with this? It Didn't do it before. Does wastegates make noise? Donna Quote Link to comment Share on other sites More sharing options...
D83ZXT Posted May 21, 2001 Author Share Posted May 21, 2001 Psst Psst Mr. 240Turbo I am useing Turbonetic and Thermal Flex with T-clamps. I will recheck my hose connections. Some of them was pretty hard to get to. Even with my small hands Also, would carb cleaner spray still let me know where the leak is? Or do I have to bring out the stethosope and listen for leaks. Yes, that's how I found a pinhole leak in the welded pipe before Hey James you may have figured it out! Maybe Maybe it's that easy! Thanks for your suggestion. Donna Psst Psst... You wouldn't have to hide in my IC...ROFL Quote Link to comment Share on other sites More sharing options...
240Z Turbo Posted May 21, 2001 Share Posted May 21, 2001 A pinhole would be hard to diagnose with the car running. If the leak is really that large as to make a psst psst sound, I would think it would be quite noticible visually. I just modded my old intercooler for Scottie GNZ and noticed I had a pinhole in the intercooler and I never noticed it when driving. It is hard to say how much a pinhole will affect performance, I would think it would be negligible, but in your case maybe substantial because it is audible. By the way, do you have the pop-off valve hooked up? Make sure you do not have any vaccum ports unplugged. Anyway, all this coded talk is making my turbo spool up something fierce! Quote Link to comment Share on other sites More sharing options...
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